Cambridge Tornado or Squall?

Archive of NZ Weather & Climate
Forum rules
These topics are a read-only archive and may be subject to out-of-date information.

For today's weather discussion head to: New Zealand Weather & Climate
Philip Duncan
Posts: 519
Joined: Mon 27/08/2007 21:02
Location: Waitakere City
Has thanked: 0
Been thanked: 0
Contact:

Cambridge Tornado or Squall?

Unread post by Philip Duncan »

Damage in Cambridge this morning... without seeing the damage it's hard to know if it was a tornado or squall... any thoughts?

Story here: http://www.weatherwatch.co.nz/content/c ... le-tornado

Cheers
Phil.
User avatar
tgsnoopy
Posts: 3653
Joined: Fri 25/03/2005 21:17
Location: Tauranga, NZ (Curse you COVID-19 :-( )
Has thanked: 816 times
Been thanked: 283 times

Re: Tornado or Squall?

Unread post by tgsnoopy »

Media heard describing it as a mini... Sigh.

Apparently over 30 houses damaged that they knew of before sunrise. Expecting further reports as it gets light.

About 3am, significant gusts and heavy rain associated with it.
Philip Duncan
Posts: 519
Joined: Mon 27/08/2007 21:02
Location: Waitakere City
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Philip Duncan »

Looking at the radar shots around 3am shows it was certainly at the very front of the rain band.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Manukau heads obs »

from your own story Phillip:
But she says the noise became very loud, so she opened the sliding doors to take a look and saw the funnel of wind rushing towards the building
conditions were unstable here yesterday afternoon,so not all that surprised that a tornado occured!
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Manukau heads obs »

Stuff have added more content to their initial report too now:
http://www.stuff.co.nz/4730293a11.html
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
User avatar
tgsnoopy
Posts: 3653
Joined: Fri 25/03/2005 21:17
Location: Tauranga, NZ (Curse you COVID-19 :-( )
Has thanked: 816 times
Been thanked: 283 times

Re: Tornado or Squall?

Unread post by tgsnoopy »

I see that Mini term again.

Lets start e-mailing them asking them to stop using it, perhaps with a little education in the form of a few e-mails they might get the message?

It's not so mini, and reports do imply it was possibly a tornado.
Last edited by tgsnoopy on Fri 17/10/2008 07:51, edited 1 time in total.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Manukau heads obs »

yes, when , in the media, does it not become a mini tornado?
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
ricky
Posts: 1054
Joined: Sun 28/09/2003 21:27
Location: Grey Lynn, Auckland
Has thanked: 488 times
Been thanked: 40 times
Contact:

Re: Tornado or Squall?

Unread post by ricky »

The New Plymouth radar does show some interesting activity around that time, I wonder if Paul or someone from Metservice could post a high res image? the radar would be seeing rain at some height that far away I imagine
Image
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Tornado or Squall?

Unread post by NZstorm »

Looking at the online Cambridge station there was a sharp shower of about 14mm around the time of the frontal passage but not much wind recorded, just a light Northerly. So the tornado missed it. Pity these thing happen at night.
spwill
Posts: 9907
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 839 times
Been thanked: 866 times

Re: Tornado or Squall?

Unread post by spwill »

Pity these thing happen at night.
Probably the reason why no one was hurt, two houses have had their roofs removed so a lot of wind there.
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ
Has thanked: 22 times
Been thanked: 273 times
Contact:

Re: Tornado or Squall?

Unread post by jamie »

Arhhh the media makes me angry with the word mini :mad: . Could they not have said a "strong squall or tornado went through Cambridge last night. Weather analysts are going to survey the damge at first light to confirm if there was actually or tornado". If it was a tornado then anounce what they think it was on the EF scale or say there was no tornado and it was a very strong squall :wave: .
I lost count how many times i have heard the word mini tornado thismorning :rolleyes: .
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Tornado or Squall?

Unread post by NZstorm »

There is little doubt this was a tornado I think. That weather station in Cambridge recorded only light winds which points to the very localised effect you get with a tornado. The meteorology also favours a tornado occurrence over a squall.
User avatar
Nev
Moderator
Posts: 6216
Joined: Tue 07/03/2006 15:24
Location: Waiheke Island, Hauraki Gulf
Has thanked: 468 times
Been thanked: 1064 times

Re: Tornado or Squall?

Unread post by Nev »

I agree. However, even if it wasn't a tornado, I'm not sure that I'd call it a squall either - too broad and general. Couldn't a squall-line even produce the odd tornado? Going by the isolated damage reports, it was either a tornado or a micro/down-burst, although it certainly sounds like a tornado going by this report from 'Stuff'. Most of the damage was around the south suburb of Leamington (google map)
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Manukau heads obs »

yes, I agree, I was just talking to Ricky about the fact that there is little wind in these systems, i.e. its not squall producing conditions (although you could still get some downdrafts occuring I guess)
Will be interesting to hear Paul's take on it all :)
Most of the damage was around the south suburb of Leamington
wow, that weather station is on the south side of town...just on the outskirts of town..

also we stayed at the Lemington Motel in the school holidays, just 2 weeks ago, and played in the park there, descriobed in that story!
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
spwill
Posts: 9907
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 839 times
Been thanked: 866 times

Re: Tornado or Squall?

Unread post by spwill »

There was very little in the way of Thunderstorm activity with last nights Cb line and no strikes were recorded around Cambridge.
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Manukau heads obs »

I wonder if topography had some influence,...i.e the waikato river is a deep gorge there , with Leamington being on the south side of that...
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
ricky
Posts: 1054
Joined: Sun 28/09/2003 21:27
Location: Grey Lynn, Auckland
Has thanked: 488 times
Been thanked: 40 times
Contact:

Re: Tornado or Squall?

Unread post by ricky »

Here are a couple of radar images from around that time.. I wonder if that persistant hook of showers is evidence of some mesocyclonic activity just ahead of the main frontal line?... it lasted quite a while from around 3am and Cambridge is right in the upper part of the hook of showers.. it is over a very wide area though and i'm not sure what heights that radar would be seeing.. Interesting though
ms3.png
t3ns.jpg
You do not have the required permissions to view the files attached to this post.
Image
User avatar
Storm Struck
Posts: 4859
Joined: Wed 17/11/2004 21:25
Location: Belfast Christchurch
Has thanked: 23 times
Been thanked: 373 times

Re: Tornado or Squall?

Unread post by Storm Struck »

How isolated does a micro/burst have to be though as per the video report which suggested a rest home was only half damaged?.
Certainly would have been a real shock to wake up to especially those who slept through it.
Cheers
Jason.
Canterbury, home of good rugby and severe storms
Manukau heads obs
Posts: 12305
Joined: Mon 10/03/2003 16:30
Location: West Coast Road, Manukau Peninsula, North Island
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Manukau heads obs »

I vote that it was a Tornado _b :wave:
Image
Brian Hamilton, weather enthusiast. My weather dataEmail: [email protected]
jamie
Posts: 5907
Joined: Fri 25/02/2011 21:35
Location: Hamilton NZ
Has thanked: 22 times
Been thanked: 273 times
Contact:

Re: Tornado or Squall?

Unread post by jamie »

Manukau heads observer wrote:I vote that it was a Tornado _b :wave:
Me too
spwill
Posts: 9907
Joined: Sun 29/06/2003 22:39
Location: Mt Eden Auckland
Has thanked: 839 times
Been thanked: 866 times

Re: Tornado or Squall?

Unread post by spwill »

User avatar
tgsnoopy
Posts: 3653
Joined: Fri 25/03/2005 21:17
Location: Tauranga, NZ (Curse you COVID-19 :-( )
Has thanked: 816 times
Been thanked: 283 times

Re: Tornado or Squall?

Unread post by tgsnoopy »

Agreed, little doubt, that was a tornado.
Philip Duncan
Posts: 519
Joined: Mon 27/08/2007 21:02
Location: Waitakere City
Has thanked: 0
Been thanked: 0
Contact:

Re: Tornado or Squall?

Unread post by Philip Duncan »

Agree it was a Tornado. Amazing photos have come through...love the one with the roofing iron embedded in the tree.
Paul Mallinson
Meteorologist (Retired)
Posts: 406
Joined: Thu 27/10/2005 20:44
Location: Greytown
Has thanked: 2 times
Been thanked: 7 times

Re: Tornado or Squall?

Unread post by Paul Mallinson »

I think it was a tornado too. Having looked back through various info this morning, this idea is consistent with the meteorological situation. Agree that it was likely an F0 or an F1.
I saw an e-mail from a couple of guys sitting on their verandah (at 3am in the morning!!) who say they saw the funnel and that it passed right over their house!

Paul
User avatar
NZstorm
Posts: 11333
Joined: Mon 10/03/2003 19:38
Location: Grey Lynn, Auckland
Has thanked: 342 times
Been thanked: 361 times

Re: Tornado or Squall?

Unread post by NZstorm »

This event reminds me of the Auckland tornado back on 11 October 2005. Occurred in similar circumstances.
We are lucky we don't get higher instability values with these spring systems as the shear would be supportive of very mean Tstorms.
Locked